It depends, for instance I bought a few of the Hollies and Youngbloods mono vinyls on the Sundazed label and they are AMAZING for sonic quality. My guess is these masters were not run over as often as their stereo counterparts.
just an observation for comment
I was giving my 20.00 one year old black crows war paint album a spin , it sounds good but a little muddy, then my 35.00 new copy of the rolling stones exile on main street, better. then my thirty year old 2.99 zz top dequello album, sound quality way better on every level. so much for new tech. im wondering if i should even bother with these 30.00 reissues, and just buy clean used.